Home / 5,240.80-7,861.65-1,729.75

Finding the Fourth Proportional to 5,240.80, 7,861.65 and 1,729.75

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Solution

The fourth proportional to 5,240.80, 7,861.65 and 1,729.75 is: 2,594.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.80 : 7,861.65 = 1,729.75 : x
  2. Step 2: Convert to fraction form
    5,240.80/7,861.65 = 1,729.75/x
  3. Step 3: Cross multiply
    5,240.80x = 7,861.65 × 1,729.75
  4. Step 4: Simplify right side
    5,240.80x = 13,598,689.09
  5. Step 5: Solve for x
    x = 13,598,689.09/5,240.80
  6. Step 6: Final answer
    x = 2,594.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.